[Title 24 CFR 3280.709]
[Code of Federal Regulations (annual edition) - May 1, 2001 Edition]
[Title 24 - HOUSING AND URBAN DEVELOPMENT]
[Subtitle B - Regulations Relating to Housing and Urban Development]
[Chapter Xx - OFFICE OF ASSISTANT SECRETARY FOR HOUSING--FEDERAL HOUSING]
[Part 3280 - MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS]
[Subpart H - Heating, Cooling and Fuel Burning Systems]
[Sec. 3280.709 - Installation of appliances.]
[From the U.S. Government Printing Office]


24HOUSING AND URBAN DEVELOPMENT52001-05-012001-05-01false3280.709Sec. 3280.709HOUSING AND URBAN DEVELOPMENTRegulations Relating to Housing and Urban DevelopmentOFFICE OF ASSISTANT SECRETARY FOR HOUSING--FEDERAL HOUSINGMANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDSHeating, Cooling and Fuel Burning Systems
Sec. 3280.709  Installation of appliances.

    (a) The installation of each appliance shall conform to the terms of 
its listing and the manufacturer's instructions. The installer shall 
leave the manufacturer's instructions attached to the appliance. Every 
appliance shall be secured in place to avoid displacement. For the 
purpose of servicing and replacement, each appliance shall be both 
accessible and removable.
    (b) Heat-producing appliances shall be so located that no doors, 
drapes, or other such material can be placed or swing closer to the 
front of the appliance than the clearances specified on the labeled 
appliances.
    (c) Clearances surrounding heat producing appliances shall not be 
less than the clearances specified in the terms of their listings.
    (1) Prevention of storage. The area surrounding heat producing 
appliances installed in areas with interior or exterior access shall be 
framed-in or guarded with noncombustible material such that the distance 
from the appliance to the framing or guarding material is not greater 
than three inches unless the appliance is installed in compliance with 
paragraph (c)(2), of this section. When clearance required by the 
listing is greater than three inches, the guard or frame shall not be 
closer to the appliance than the distance provided in the listing.
    (2) Clearance spaces surrounding heat producing appliances are not 
required to be framed-in or guarded when:
    (i) A space is designed specifically for a clothes washer or dryer;
    (ii) Dimensions surrounding the appliance do not exceed three 
inches; or
    (iii) The manufacturer affixes either to a side of an alcove or 
compartment containing the appliance, or to the appliance itself, in a 
clearly visible location, a 3" x 5" adhesive backed plastic laminated 
label or the equivalent which reads as follows:

                               ``Warning''

    This compartment is not to be used as a storage area. Storage of 
combustible materials or containers on or near any appliance in this 
compartment may create a fire hazard. Do not store such materials or 
containers in this compartment.

    (d) All fuel-burning appliances, except ranges, ovens, illuminating 
appliances, clothes dryers, solid fuel-burning fireplaces and solid 
fuel-burning fireplace stoves, shall be installed to provide for the 
complete separation of the combustion system from the interior 
atmosphere of the manufactured home. Combustion air inlets and flue gas 
outlets shall be listed or certified

[[Page 177]]

as components of the appliance. The required separation may be obtained 
by:
    (1) The installation of direct vent system (sealed combustion 
system) appliances, or
    (2) The installation of appliances within enclosures so as to 
separate the appliance combustion system and venting system from the 
interior atmosphere of the manufactured home. There shall not be any 
door, removable access panel, or other opening into the enclosure from 
the inside of the manufactured home. Any opening for ducts, piping, 
wiring, etc., shall be sealed.
    (e) A forced air appliance and its return-air system shall be 
designed and installed so that negative pressure created by the air-
circulating fan cannot affect its or another appliance's combustion air 
supply or act to mix products of combustion with circulating air.
    (1) The air circulating fan of a furnace installed in an enclosure 
with another fuel-burning appliance shall be operable only when any door 
or panel covering an opening in the furnace fan compartment or in a 
return air plenum or duct is in the closed position. This does not apply 
if both appliances are direct vent system (sealed combustion system) 
appliances.
    (2) If a warm air appliance is installed within an enclosure to 
conform to Sec. 3280.709(d)(2), each warm-air outlet and each return air 
inlet shall extend to the exterior of the enclosure. Ducts, if used for 
that purpose, shall not have any opening within the enclosure and shall 
terminate at a location exterior to the enclosure.
    (3) Cooling coils installed as a portion of, or in connection with, 
any forced-air furnace shall be installed on the downstream side unless 
the furnace is specifically otherwise listed.
    (4) An air conditioner evaporator section shall not be located in 
the air discharge duct or plenum of any forced-air furnace unless the 
manufactured home manufacturer has complied with certification required 
in Sec. 3280.511.
    (5) If a cooling coil is installed with a forced-air furnace, the 
coil shall be installed in accordance with its listing. When a furnace-
coil unit has a limited listing, the installation must be in accordance 
with that listing.
    (6) When an external heating appliance or combination cooling/
heating appliance is to be field installed, the home manufacturer shall 
make provision for proper location of the connections to the supply and 
return air systems. The manufacturer is not required to provide said 
appliance(s). The preparation by the manufacturer for connection to the 
home's supply and return air system shall include all fittings and 
connection ducts to the main duct and return air system such that the 
installer is only required to provide:
    (i) The appliance;
    (ii) Any appliance connections to the home; and
    (iii) The connecting duct between the external appliance and the 
fitting installed on the home by the manufacturer. The above connection 
preparations by the manufacturer do not apply to supply or return air 
systems designed only to accept external cooling (i.e., self contained 
air conditioning systems, etc.)
    (7) The installation of a self contained air conditioner comfort 
cooling appliance shall meet the following requirements:
    (i) The installation on a duct common with an installed heating 
appliance shall require the installation of an automatic damper or other 
means to prevent the cooled air from passing through the heating 
appliance unless the heating appliance is certified or listed for such 
application and the supply system is intended for such an application.
    (ii) The installation shall prevent the flow of heated air into the 
external cooling appliance and its connecting ducts to the manufactured 
home supply and return air system during the operation of the heating 
appliance installed in the manufactured home.
    (iii) The installation shall prevent simultaneous operation of the 
heating and cooling appliances.
    (f) Vertical clearance above cooking top. Ranges shall have a 
vertical clearance above the cooking top of not less than 24 inches. 
(See Sec. 3280.204).
    (g) Solid fuel-burning factory-built fireplaces and fireplace stoves 
listed for use in manufactured homes may be

[[Page 178]]

installed in manufactured homes provided they and their installation 
conform to the following paragraphs. A fireplace or fireplace stove 
shall not be considered as a heating facility for determining compliance 
with subpart F.
    (1) A solid fuel-burning fireplace or fireplace stove shall be 
equipped with integral door(s) or shutter(s) designed to close the 
fireplace or fireplace stove fire chamber opening and shall include 
complete means for venting through the roof, a combustion air inlet, a 
hearth extension, and means to securely attach the fireplace or the 
fireplace stove to the manufactured home structure. The installation 
shall conform to the following paragraphs (g)(1) (i) to (vii) inclusive:
    (i) A listed factory-built chimney designed to be attached directly 
to the fireplace or fireplace stove shall be used. The listed factory 
built chimney shall be equipped with and contain as part of its listing 
a termination device(s) and a spark arrester(s).
    (ii) A fireplace or fireplace stove, air intake assembly, hearth 
extension and the chimney shall be installed in accordance with the 
terms of their listings and their manufacturer's instructions.
    (iii) The combustion air inlet shall conduct the air directly into 
the fire chamber and shall be designed to prevent material from the 
hearth dropping onto the area beneath the manufactured home.
    (iv) The fireplace or fireplace stove shall not be installed in a 
sleeping room.
    (v) Hearth extension shall be of noncombustible material not less 
than \3/8\-inch thick. The hearth shall extend at least 16 inches in 
front or and at least 8 inches beyond each side of the fireplace or 
fireplace stove opening. Furthermore the hearth shall extend over the 
entire surface beneath a fireplace stove and beneath an elevated or 
overhanging fireplace.
    (vi) The label on each solid fuel-burning fireplace and solid fuel-
burning fireplace stove shall include the following wording: For use 
with solid fuel only.
    (vii) The chimney shall extend at least three feet above the part of 
the roof through which it passes and at least two feet above the highest 
elevation of any part of the manufactured home within 10 feet of the 
chimney. Portions of the chimney and termination that exceed an 
elevation of 13\1/2\ ft. above ground level may be designed to be 
removed for transporting the manufactured home.

[40 FR 58752, Dec. 18, 1975. Redesignated at 44 FR 20679, Apr. 6, 1979, 
as amended at 44 FR 66195, Nov. 19, 1979; 58 FR 55018, Oct. 25, 1993]